Our organic potato crop is now growing out in the field. Potatoes are harvested in September and October each year and are available to ship to you at that time. Seed Potatoes: After Harvest, potato tubers must go through a dormancy period before they will sprout and grow. This dormancy will last 4-10 weeks. For planting after December 1, the dormancy concern is a non-issue because our potatoes have completed their rest period here and will easily sprout and grow when warmed to room temperature.Bred by the Loo brothers, organic farmers from Prince Edward Island, Canada. Island Sunshine has a great flavor. A delightful, creamy, golden-fleshed potato. Best for boiling, also baked. 110-135 days to maturity.